Fixed SourceModel.__toh5__
Fixed SourceModel.__toh5__


Former-commit-id: a40ede383c6fb732163649890dd9bb72f8f694d6 [formerly 81e8e66704edb6191d49a904f9980f84d7e69f5a]
Former-commit-id: 3aee9d863542b87ae9960e459697f5fdce01730b
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine